I highly recommend prioritizing paying the 120 for Global Entry.
https://www.visajourney.com/forums/topic/799684-global-entry-with-conditional-green-card/
If anything, the extra background check may facilitate USCIS processing, since GE, TSA, CBP, USCIS, etc. are all under DHS information sharing along with the airport benefits of TSA and GE.
However, with GE, there is also the extra responsibility of self-enforcement of customs. For example, you complete the self-declaration form on arrival and breeze through the GE kiosk with no checks. You may have forgotten you brought in some restricted items like fruits, but your luggage CBP x-rays already recorded the fruits. Don't be surprised if your GE gets revoked with no warning, and your USCIS processing or any DHS-dependent processes get more scrutinized with no clear explanations. This is just an example of some posts I've been reading.